Spin-label-induced selective carbon-13 nuclear relaxation: structures of the .gamma.-cyclodextrin-tempone and .alpha.-cyclodextrin-di-tert-butyl nitroxide inclusion complexes in solution

1989 ◽  
Vol 22 (10) ◽  
pp. 3888-3892 ◽  
Author(s):  
Michael P. Eastman ◽  
James R. Brainard ◽  
David Stewart ◽  
Greg Anderson ◽  
W. D. Lloyd
Keyword(s):  
Inclusion Complexes ◽  
Spin Label ◽  
Nuclear Relaxation ◽  
Tert Butyl ◽  
Gamma Cyclodextrin

Spin-label-induced nuclear relaxation. Distances between bound saccharides, histidine-15, and tryptophan-123 on lysozyme in solution

Biochemistry ◽  
1972 ◽  
Vol 11 (20) ◽  
pp. 3707-3716 ◽  
Author(s):  
Richard W. Wien ◽  
Joel D. Morrisett ◽  
Harden M. McConnell
Keyword(s):  
Spin Label ◽  
Nuclear Relaxation

Structure-reactivity correlation in inclusion complexes: deoxycholic acid di-tert-butyl thioketone

1984 ◽  
Vol 62 (10) ◽  
pp. 2025-2028 ◽  
Author(s):  
K. Padmanabhan ◽  
K. Venkatesan ◽  
V. Ramamurthy
Keyword(s):  
Inclusion Complexes ◽  
Structure Analysis ◽  
Ultraviolet Irradiation ◽  
Deoxycholic Acid ◽  
X Ray Diffraction ◽  
X Ray ◽  
Tert Butyl ◽  
Molecular Inclusion

Ultraviolet irradiation of crystalline molecular inclusion complexes of deoxycholic acid with di-tert-butyl thioketone results in no reaction. The structure of the above complex has been determined via X-ray diffraction. The absence of expected photoreactions, namely, photoreduction and photooxidation, is rationalized on the basis of the X-ray structure analysis of the complex.

Stoichiometry and formation constants of pyrene inclusion complexes with .beta.- and .gamma.-cyclodextrin

1991 ◽  
Vol 95 (8) ◽  
pp. 3330-3334 ◽  
Author(s):  
A. Munoz de la Pena ◽  
T. Ndou ◽  
J. B. Zung ◽  
I. M. Warner
Keyword(s):  
Inclusion Complexes ◽  
Formation Constants ◽  
Gamma Cyclodextrin

scholarly journals Preparation, Characterization and Dissolution Behaviour of Freeze Dried Complexes of Curcumin-Gamma Cyclodextrin

2021 ◽  
pp. 17-26
Author(s):  
M. J. Ansari ◽  
K. Kohli ◽  
J. Ali
Keyword(s):  
Inclusion Complexes ◽  
Release Kinetics ◽  
In Vitro Release ◽  
Stoichiometric Ratio ◽  
Scanning Calorimetry ◽  
First Order ◽  
Rate Of Dissolution ◽  
Freeze Dried ◽  
Gamma Cyclodextrin

The aim of the current research was to develop and characterize curcumin-gamma cyclodextrin inclusion complexes in order to enhance solubility and rate of dissolution of poorly soluble curcumin. Based on the stoichiometric ratio of 1:1, the inclusion complexes of curcumin with γ-cyclodextrin were prepared by freeze drying method. The prepared dried and solidified inclusion complexes were characterized with the help of infrared spectroscopy, differential scanning calorimetry, and X-ray diffractometry. The comparative evaluation of solubility and rate of dissolution were investigated and compared with pure curcumin. Dissolution study demonstrated only 10% release from pure curcumin at 1 hour as opposed of approximately 72% release form freeze dried curcumin complexes. The freeze dried complexes exhibited almost complete release after 5 hours while only 34% release was observed from the pure curcumin during the same time period. Therefore, the freeze dried complex provided approximately 3 to 7-fold enhancement in the dissolution and release of curcumin over a period of 6 hours of dissolution testing.  The kinetics of the in vitro release behaviors of the curcumin and curcumin complexes were investigated by applying various models such as zero order, first order, Higuchi and Peppas models. The release of the curcumin was observed to follow the first order release kinetics, since the correlation coefficient (R2) for the first order was the highest in comparison to other kinetic models.

Photostability of water-soluble inclusion complexes of UV-filters and curcumin with gamma-cyclodextrin polymer

2015 ◽  
Vol 84 (1-2) ◽  
pp. 121-128 ◽  
Author(s):  
Thitinun Karpkird ◽  
Raweewan Khunsakorn ◽  
Chaiwat Noptheeranuphap ◽  
Junya Jettanasen
Keyword(s):  
Inclusion Complexes ◽  
Water Soluble ◽  
Uv Filters ◽  
Cyclodextrin Polymer ◽  
Gamma Cyclodextrin

scholarly journals Solubility Enhancement of Steviol Glycosides and Characterization of Their Inclusion Complexes with Gamma-Cyclodextrin

2011 ◽  
Vol 12 (11) ◽  
pp. 7529-7553 ◽  
Author(s):  
Mani Upreti ◽  
Ken Strassburger ◽  
You L. Chen ◽  
Shaoxiong Wu ◽  
Indra Prakash
Keyword(s):  
Inclusion Complexes ◽  
Solubility Enhancement ◽  
Steviol Glycosides ◽  
Gamma Cyclodextrin
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